Default rule for combining multiple descriptors in one macro screen

There is a default processing rule that applies when multiple descriptors are combined in one macro screen. It is called the default combining rule and it operates as follows:

  1. Evaluate all the required descriptors (that is, descriptors for which the Optional field is set to false).
    1. If all are true, then the screen matches.
    2. Otherwise, go to step 2.
  2. Start evaluating the optional descriptors (descriptors for which the Optional field is set to true).
    1. If any optional descriptor is true, then the screen matches.
    2. Otherwise, go to step 3.
  3. If you reach here, then the macro screen does not match the application screen.